Explain the difference between abstract class and interface in java?

746

What is a priority queue java?

724

Why is java not 100% pure oops?

816

What is a treemap in java?

756

What is equlas() and hashcode() contract in java? Where does it used?

817

What is Classloader in Java?

829

What is operator overloading. Is it is supported in java?

727

Is there any way to skip finally block of exception even if some exception occurs in the exception block?

843

What are static blocks in java ?

832

What are disadvantages of java?

752

How to make a class or a bean serializable?

734

What is an abstract method in java programming?

799

What is files manifesting?

1963

What are the differences between wait() and sleep()?

748

Explain notifyall() method of object class ?

868